The Acti/Bliz acquisition was an order of magnitude above Bungie but it was still a pretty high price for them. Patcher is looking and commenting on this a bit too one dimensionally and doesn't really understand the real reasoning behind why Sony acquired Bungie. It's not really about Destiny its all about leveraging their GAAS framework and technology in all of Sony's other studios.
Well, it's way more than that:
-To own and milk Destiny in games, movies and tv shows
-To own and milk all future new IPs made by the creators of Halo and Destiny (multiple ones to be released in a few years) and milk them in games, movies and tv shows
-900 devs
-Industtry leading top knowledge, expertise, talent, data, tech and tools for GaaS that other SIE teams will use
-Industtry leading top knowledge, expertise, talent, data, tech and tools for massive MP games that other SIE teams will use
-Industtry leading top knowledge, expertise, talent, data, tech and tools for FPS that other SIE teams will use
-Securing that Destiny and future Bungie IPs will stay on PS and Sony game subscriptions
-To get a better positioning in non-PS markets like PC and even non-Sony consoles
-To show other 3rd party publishers that now Sony can acquire them and to allow them some freedom like allowing them to continue as publisher even in PC and non-PS consoles, similar to MS did with Mojang, Zenimax and ABK.
It’s deff an over paid defensive purchase
It isn't a defensive purchase, they started this acquisition half a year ago and the ABK acquisition started in December.
This acquisition continues continues Sony's strategy of acquiriing partners who can help them grow and improve in areas/markets/niches where their existing 1st party teams have many room to improve or need some help to excel or would welcome some extra support.
This week Sony also bought the mobile gaming development studio who made the game that has been generating around $1B/year to Sony for years. This acquisition was also in the works during months ago, has nothing to do with MS buying King.
It's for the same reason: Bungie will help SIE improve on AAA GaaS, top MP games and top FPS. This other studio will help Sony tto have their own top mobile games. By acquiring these successful parters Sony improves and grows in these areas.